DTC P0720: Notes
DTC P0720 DETECTION CONDITION AND POSSIBLE CAUSES
| DTC P0720 |
Vehicle speedometer sensor (VSS) malfunction (open circuit/short circuit) |
| DETECTION CONDITION |
- Vehicle speedometer sensor signal is 150 rpm or less
while intermediate sensor signal is 1,400 rpm or greater
in D, 3, or 2 range for 2 seconds or more.
Diagnostic support note:
- This is a continuous monitor (CCM).
- MIL illuminates if TCM detects the above malfunction conditions in two consecutive drive cycles.
- PENDING CODE is available.
- FREEZE FRAME DATA is available.
- O/D OFF indicator light flashes.
- DTC is stored in TCM memory.
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| POSSIBLE CAUSE |
- Open circuit between vehicle speedometer sensor terminal B and TCM terminal 1M
- Open circuit between vehicle speedometer sensor terminal A and TCM terminal 1V
- Short to ground between vehicle speedometer sensor terminal B and TCM terminal 1M
- Short to ground between vehicle speedometer sensor terminal A and TCM terminal 1V
- Vehicle speedometer sensor malfunction
- Damaged connectors between vehicle speedometer sensor to TCM
- TCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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